- CD28.2 (See other available formats)
- Regulatory Status
- Other Names
- T44, Tp44
- Mouse IgG1, κ
- Ave. Rating
- Submit a Review
- Product Citations
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CD28 is a 44 kD disulfide-linked homodimeric type I glycoprotein. It is a member of the immunoglobulin superfamily and is also known as T44 or Tp44. CD28 is expressed on most T lineage cells, NK cell subsets, and plasma cells. CD28 binds both CD80 and CD86 using a highly conserved motif MYPPY in the CDR3-like loop. CD28 is considered a major co-stimulatory molecule, inducing T lymphocyte activation and IL-2 synthesis, and preventing cell death. In vitro studies indicate that ligation of CD28 on T cells by CD80 and CD86 on antigen presenting cells provides a costimulatory signal required for T cell activation and proliferation.Product Details
- Human, Baboon, Capuchin Monkey, Chimpanzee, Cynomolgus, Pigtailed Macaque, Rhesus, Sooty Mangabey, Squirrel Monkey
- Antibody Type
- Host Species
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA).
- The antibody was purified by affinity chromatography and conjugated with Brilliant Violet 421™ under optimal conditions.
- Lot-specific (please contact technical support for concentration and total µg amount, or use our Lookup tool if you have a lot number.)
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
FC - Quality tested
- Recommended Usage
Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is 5 µl per million cells in 100 µl staining volume or 5 µl per 100 µl of whole blood.
Brilliant Violet 421™ excites at 405 nm and emits at 421 nm. The standard bandpass filter 450/50 nm is recommended for detection. Brilliant Violet 421™ is a trademark of Sirigen Group Ltd.
Learn more about Brilliant Violet™.
This product is subject to proprietary rights of Sirigen Inc. and is made and sold under license from Sirigen Inc. The purchase of this product conveys to the buyer a non-transferable right to use the purchased product for research purposes only. This product may not be resold or incorporated in any manner into another product for resale. Any use for therapeutics or diagnostics is strictly prohibited. This product is covered by U.S. Patent(s), pending patent applications and foreign equivalents.
- Excitation Laser
Violet Laser (405 nm)
- Application Notes
The Ultra-LEAF™ Purified antibody (Endotoxin < 0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for highly sensitive assays.
(PubMed link indicates BioLegend citation)
- Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
- Nunes J, et al. 1993. Biochem. J. 293:835.
- Calea-Lauri J, et al. 1999. J. Immunol. 163:62.
- Tazi A, et al. 1999. J. Immunol. 163:3511. (IHC)
- Marti F, et al. 2001. J. Immunol. 166:197. (Costim)
- Jeong SH, et al. 2004. J. Virol. 78:6995. (Costim)
- Rivollier A, et al. 2004. Blood 104:4029. (Costim)
- Scharschmidt E, et al. 2004. Mol. Cell Biol. 24:3860. (Costim)
- Sheng W, et al. 2007.Elsevier 580:6819. PubMed
- Mitsuhashi M. 2007. Clin Chem.53:148. PubMed
- Ye Z, et al. 2008. Infect. Immun. 76:2541. PubMed
- Magatti M, et al. 2008. Stem Cells 26:182. (FA) PubMed
- Yoshino N, et al. 2008. Exp. Anim. (Tokyo) 49:97. (FC)
- Berg M, et al. 2008. J Leukoc Biol. 83:853. (IP) PubMed
- Rout N, et al. 2010. PLoS One 5:e9787. (FC)
- Leonard JA, et al. 2011. J. Virol. 85:6867. PubMed
- Nomura T, et al. 2012. J. Virol. 86:6481. PubMed
- Product Citations
AB_2561341 (BioLegend Cat. No. 302929)
AB_2561910 (BioLegend Cat. No. 302930)
- Ig superfamily, type I transmembrane glycoprotein, homodimer, 44 kD
Mature T cells, thymocytes, NK cell subsets, plasma cells, EBV-positive B cells
- T cell costimulation
- CD80, CD86
- Cell Type
- B cells, NK cells, Plasma cells, T cells, Thymocytes, Tregs
- Biology Area
- Costimulatory Molecules, Immunology
- Molecular Family
- CD Molecules
- Antigen References
1. Schlossman S, et al. Eds. 1995. Leucocyte Typing V. Oxford University Press. New York.
2. June CH, et al. 1994. Immunol. Today 15:321.
3. Linskey PS, et al. 1993. Annu. Rev. Immunol. 11:191.
- Gene ID
- 940 View all products for this Gene ID
- View information about CD28 on UniProt.org
- What is the F/P ratio range of our BV421™ format antibody reagents?
It is lot-specific. On average it ranges between 2-4.
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